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Wave Optics

Question
CBSEENPH12039556

STATEMENT – 1
When ultraviolet light is incident on a photocell, its stopping potential is V0 and the maximum kinetic energy of the photoelectrons is Kmax. When the ultraviolet light is replaced by X–rays, both V0 and Kmax increase.

STATEMENT – 2
Photoelectrons are emitted with speeds ranging from zero to a maximum value because of the range of frequencies present in the incident light.

  • Statement – 1 is True, Statement – 2 is False.

  • Statement – 1 is True, Statement – 2 is True; Statement – 2 is a correct explanation for Statement – 1.

  • Statement – 1 is True, Statement – 2 is True; Statement – 2 is not the correct explanation for Statement – 1.

  • Statement – 1 is False, Statement – 2 is True.

Solution

A.

Statement – 1 is True, Statement – 2 is False.

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